The Effect of Using Computer Technology Tools to Enhance the Teaching-Learning Process in CAD-CAM-CNC Module in Mechanical Engineering Subject Area

This study presents the evaluation of Computer Assisted Learning (CAL) package included in the teaching and learning methodology of computer aided design- computer aided design - computer numerical control (CAD-CAM-CNC) module. Three groups of students with similar pre-abilities were exposed to three different teaching learning methodologies.The effectiveness of these three methods was determined by questionnaires completed by the students and collected by first author. Their answers were analysed quantitatively and qualitatively. The various categories used in the questionnaire was student’s attitudes towards learning CAD-CAM-CNC subjects, students’ opinions about their lecturers approaches to teaching process, students’ opinions and views about various aspects the CAD-CAM-CNC. The study concludes that the students taught with a combination of CAL package and traditional methods were more effective, efficient and satisfied with their learning experiences. So the proposed hybrid learning method (CAI plus traditional teaching method) is most suited for CAD-CAM-CNC teaching. Computer Technology; Computer-Assisted Instruction (CAI); Computer Assisted Learning (CAL); Computer Aided Design (CAD); Computer Aided Manufacturing (CAM); Computer Numerical Control (CNC)

Kernel arquitecture for CAD/CAM in shipbuilding enviroments

The capabilities of complex software products such as CAD/CAM systems are strongly supported by basic information technologies related with data management, visualization, communication, geometry modeling and others related with the development process. These basic information technologies are involved in a continuous evolution process, but over recent years this evolution has been dramatic. The main reason for this has been that new hardware capabilities (including graphic cards) are available at very low cost, but also a contributing factor has been the evolution of the prices of basic software. To take advantage of these new features, the existing CAD/CAM systems must undergo a complete and drastic redesign. This process is complicated but strategic for the future evolution of a system. There are several examples in the market of how a bad decision has lead to a cul-de-sac (both technically and commercially). This paper describes what the authors consider are the basic architectural components of a kernel for a CAD/CAM system oriented to shipbuilding. The proposed solution is a combination of in-house developed frameworks together with commercial products that are accepted as standard components. The proportion of in-house frameworks within this combination of products is a key factor, especially when considering CAD/CAM systems oriented to shipbuilding. General-purpose CAD/CAM systems are mainly oriented to the mechanical CAD market. For this reason several basic products exist devoted to geometry modelling in this context. But these basic products are not well suited to deal with the very specific geometry modelling requirements of a CAD/CAM system oriented to shipbuilding. The complexity of the ship model, the different model requirements through its short and changing life cycle and the many different disciplines involved in the process are reasons for this inadequacy. Apart from these basic frameworks, specific shipbuilding frameworks are also required. This second layer is built over the basic technology components mentioned above. This paper describes in detail the technological frameworks which have been used to develop the latest FORAN version.Postprint (published version

Использование современных CAD/CAM/CAE/PLM-систем при сквозном параллельном цикле подготовки производства

Розглянуто питання використання сучасних CAD/CAM/CAE/PLM-систем при крізному паралельному циклі підготовки виробництва.The task of use of modern CAD/CAM/CAE/PLM-systems in concurrent engineering.Рассмотрены вопросы использования современных CAD/CAM/CAE/PLM-систем при сквозном параллельном цикле подготовки производства

Fabrication of Implant Supported Fixed Dental Prosthesis Framework - CAD/CAM as a Key Player

Objective-To know the importance of CAD/CAM in the fabrication of implant retained prosthesis frameworkReview of the studies showing the fit of the implant prosthesis framework fabricated by CAD/CAMDiscussion- Initially, CAD/CAM was used to fabricate implant components from titanium and titanium alloy. To date, CAD/CAM is the only way of producing implant components from high-strength ceramics such as densely sintered alumina and partially stabilized zirconia.The accuracy can be measured by vertical fit of CAD/CAM frameworks ranged from 1 to 27μm which was significantly better than cast implant frameworks. In addition, a similar level of fit was observed for implant CAD/CAM frameworks produced from zirconia and titanium.CAD/CAM produces zirconia workpieces that require no subsequent alteration, unnecessary weakening is avoided. This ensures durability of the prosthesis. Maximal abutment and framework thickness is desirable and increases the fracture resistance. The risk of veneering ceramic fracture is expected to be minimized in the future by the continuously improving veneering strategies.In comparison to the lost wax/casting protocol, CAD/CAM is much simpler and requires less technical time and involvement. The whole CAD/CAM process is fully automated following the scanning step.Conclusion- CAD/CAM plays a key role in fabrication of implant prosthesis framework because of bypassing most of the laboratory works and manual handling. By using CAD/CAM frameworks, fixed partial or full-arch dental prostheses can be fabricated.Clinical significance- Application of CAD/CAM is cost effective as well as less chair-side adjustments required especially with prosthesis requiring frameworks

Coping Manufactured Technique of Spinell Slip Cast All Ceramic by Conventional Methods and Cad/cam

Background: Ceramic restorations is divided into two kindsnamelyPorcelain Fused to Metal (PFM) and all-ceramic restorations. In ceram spinell is one of the materials needed for manufacturing anterior coping of all ceramic which has better aesthetic than in other in ceram. Methods which have been done are Conventional Slip Cast by application of spinell paste on refractory die manually and CAD/CAM computer-based technique. The difference of mentioned previously methods is few step-in slips cast methods can be performed only by one step CAD/CAM methods. Objective: To discover the differences between Conventional Slip Cast methods and CAD/ CAM methods. Review: Application of CAD/CAM methods has few advantages compared to conventional methods. Since few step-in conventional methods can be performed only one step in CAD/CAM methods. Conclusion: In order to shorten the time in manufacturing spinell all-ceramic, the dental technician may use CAD/CAM methods. Few advantages of CAD/CAM methods compare to slip cast methods are not necessary to do die to block out, die duplication, wetting agent spraying, vitasonic and ultrasonic USAge, giving border by ink pen for determining application border, preparing spinell paste for coping application. Those steps all can be performed only by scanning, design, and milling by CAD/CAM methods. Besides that, coping result produced by CAD/ CAM methods has good accuracy due to spinell block utilization which has better homogenous composition

Physico-mechanical properties and bacterial adhesion of resin composite CAD/CAM blocks : an in-vitro study

The recent introduction of CAD/CAM technology has been strongly impacting the workflow in dental clinics and labs. Among the used CAD/CAM materials, resin composite CAD/CAM blocks offer several advantages. The aim of this study was to evaluate the physic

Rationale for the Use of CAD/CAM Technology in Implant Prosthodontics

Despite the predictable longevity of implant prosthesis, there is an ongoing interest to continue to improve implant prosthodontic treatment and outcomes. One of the developments is the application of computer-aided design and computer-aided manufacturing (CAD/CAM) to produce implant abutments and frameworks from metal or ceramic materials. The aim of this narrative review is to critically evaluate the rationale of CAD/CAM utilization for implant prosthodontics. To date, CAD/CAM allows simplified production of precise and durable implant components. The precision of fit has been proven in several laboratory experiments and has been attributed to the design of implants. Milling also facilitates component fabrication from durable and aesthetic materials. With further development, it is expected that the CAD/CAM protocol will be further simplified. Although compelling clinical evidence supporting the superiority of CAD/CAM implant restorations is still lacking, it is envisioned that CAD/CAM may become the main stream for implant component fabrication

Demand And Supply: College Faculty’s Perceptions Of Computer Aided Design (cad) And Computer Aided Manufacture (cam) In Jewelry Design And Production

ABSTRACT The purpose of this research study was to explore perceptions of university faculty and jewelry industry professionals regarding the teaching of Computer Aided Design (CAD) and Computer Aided Manufacture (CAM) in a visual arts classroom. At the time of this study, there were mixed opinions about the teaching of CAD/CAM in the production of jewelry products, and there was limited literature available on this topic. With the use of CAD/CAM technologies, a jeweler emerges as potentially an artist and a design engineer who can apply creative and innovative principles to industrial design and manufacturing processes. Considering the impact of CAD/CAM on disciplines such as Engineering, Medicine, Industrial Designing, and Architecture, and the potential effect that CAD/CAM may have on visual arts, particularly on the production of jewelry, it is surprising how little research has been directed towards this area. This study examined how fine arts professors have been using CAD/CAM technology and traditional methods of design and fabrication of jewelry as a teaching aid in the pedagogy of jewelry training. The research findings showed a gap between art and design educational institutions and businesses in the jewelry design and manufacturing industry. CAD/CAM technology is a tool to aid jewelers and one of a number of means to an end. CAD/CAM has added an enhanced creative dimension to jewelry design and manufacturing and this inventive technology has allowed jewelry design and manufacturing to push beyond creative and innovative boundaries. This study shows that faculty members with knowledge in CAD/CAM are prepared to use the technology to teach jewelry design and manufacturing, but very few educational institutions had incorporated CAD/CAM into their teaching curricula at the time of this study. The jewelry design and manufacturing industry, on the other hand, has already been taking advantage of CAD/CAM technologies and has used these technologies to be competitive and also to maximize profit

A CAD/CAM/CNC Curriculum for High School Students

The need for CAD/CAM/CNC curriculum for Washington State was researched. Based on research a resource workbook for CAD/CAM/CNC was in demand. In order to meet the demand for CAD/CAM/CNC curriculum and bridge the gap between the state standards, drafting frameworks, STEM curriculum, increased focus on implementation within multiple disciplines, providing a starting point for teachers who want to use CNC machinery in their program, and prepare students for quality jobs and careers related to CAD/CAM/CNC, a workbook was created. The workbook includes 27 hands-on lessons and projects, student handouts, applied STEM problems and activities, tutorials, drafting standards, state math standards, and equation sheets. The workbook is designed to be used as a resource for CAD/CAM/CNC teachers in Washington State

CAD / CAM dental systems in implant dentistry : update

CAD/CAM systems (computer-aided design / computer aided manufacturing) used for decades in restorative dentistry have expanded its application to implant dentistry. This study aimed to look through CAD/CAM systems used in implant dentistry, especially emphasizing implant abutments and surgical templates manufacturing. A search of articles published in English at Medline and Scopus databases at present was conducted, introducing ?dental CAD/CAM?, ?implants abutments? and ?surgical guide CAD/CAM? as key words. These systems consist of three components: 1) data capture using optical systems or laser scanning, 2) CAD for the design of the restoration, and 3) CAM to produce the restoration through the information generated by computer. CAD/CAM abutments present the advantages of being specific to each patient and providing a better fit than the rest of abutments, in addition to being much more tough as they employ materials such as titanium, alumina and zirconium. In order to improve accuracy during implant placement we use stereolithography to manufacture CAD/CAM surgical templates. Using this method, minimally invasive surgery is performed without a flap, and the prosthesis is delivered, achieving immediate functional loading to the implants